| 摘要 |
PURPOSE:To perform a halftone recording of a wide range by a method wherein an energy application means for delivering a recording liquid from a nozzle is controlled, and a gap between a nozzle forming body and the energy application means is made changable. CONSTITUTION:A lower plate 6 is disposed opposedly to an upper plate 1 provided with a nozzle 2 as a nozzle forming body across a spacer 4 to form a liquid chamber 3. As an energy application means for delivering a liquid drip from the nozzle 2, a heating element 10 is provided. A pulse voltage VE is applied between the upper and lower plates from a liquid chamber deforming voltage pulse source 9. The upper and lower plates are deformed to each other to the center by an electrostatic force generated between the both plates. When, in this state, a pulse VP1 is applied to the heating element 10 from a heating element driving pulse source 11, a bubble 12 is generated to jet out a liquid drip 13. A liquid chamber gap (d), i.e., a distance between the upper and lower plates, can be changed by controlling the liquid chamber deforming voltage VE; therefore, a distance between the generated bubble and the nozzle is varied. |
